78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
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/****************************************************************************
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* apps/graphics/traveler/tools/libwld/wld_removeplane.c
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* This file contains the logic that removes the specified plane from the
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* world plane list and "deallocates" it by saving it on the free list
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/*************************************************************************
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* Included files
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*************************************************************************/
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#include <stdio.h>
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#include "trv_types.h"
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#include "wld_plane.h"
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/*************************************************************************
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* Public Functions
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*************************************************************************/
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/*************************************************************************
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* Name: wld_RemovePlane
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* Description:
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* This function removes the specified plane from the world plane list
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* and "deallocates" it by saving it on the free list
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************************************************************************/
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void wld_RemovePlane(rectListType *rect, rectHeadType *list)
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{
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/* Un-hook the backward link to the rect */
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if (rect->flink)
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rect->flink->blink = rect->blink;
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else
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list->tail = rect->blink;
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/* Un-hook the forward link to the rect */
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if (rect->blink)
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rect->blink->flink = rect->flink;
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else
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list->head = rect->flink;
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/* Then put the rect on the free list */
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rect->flink = freeList;
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freeList = rect;
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}
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